I knew that, must have taken my Stupid Pills this morning. Thanks for catching it.
I was thinking of Mt Travel Sobek which has Kili climbs too. Also REI Kili trips are probably fairly economical too.
Bear in mind the Tanzanian Park People charge you by the length (days) of your trip. Thus the Western Shira Plateau will cost more than the usual tourist routes since it takes longer, but I definitely recommend that route as you will see less people, enjoy different scenery & you will descend down one of the normal tourist routes. We came down the Mweka Route which as I recall was fairly steep and muddy in places.